<!DOCTYPE html>
<html>
<head>
    <meta charset="UTF-8">
    <title>vue标准</title>
    <link rel="stylesheet" href=".css">
    <script src="https://unpkg.com/vue"></script>
</head>
<body>
<div id="vue-app">
    <p>{{message}}</p>
    <button v-on:click="reverse">逆转消息</button>
</div>

<script src="v1.js" ></script>
</body>
</html>